added links to Memfault's interrupt blog

00_basics/readme.md

@@ -1,6 +1,6 @@
 
 # Example freestanding application
 
-This is an empty [Zephyr freestanding application](https://docs.zephyrproject.org/latest/develop/application/index.html#zephyr-freestanding-app) used in the first article of the "Practical Zephyr" series. It shows all files that are necessary to build an application. Browse the files and read the comments for more details - or even better, follow along the article series!
+This is an empty [Zephyr freestanding application](https://docs.zephyrproject.org/latest/develop/application/index.html#zephyr-freestanding-app) used in the [first article](https://interrupt.memfault.com/blog/practical_zephyr_basics) of the "Practical Zephyr" series. It shows all files that are necessary to build an application. Browse the files and read the comments for more details - or even better, follow along the article series!
 
 > **Note:** The [`tasks.py`](./tasks.py) script is used by the [GitHub action](../.github/workflows/ci.yml) for building this application using [invoke](https://www.pyinvoke.org/).

readme.md

@@ -2,7 +2,9 @@
 
 # Example freestanding applications for the Practical-Zephyr blog series
 
-This is the main repository containing all _freestanding_ example applicaitons of the "Practical Zephyr" blog series.
+This is the main repository containing all _freestanding_ example applications of the "Practical Zephyr" blog series:
+
+- [Part 1: Zephyr Basics](https://interrupt.memfault.com/blog/practical_zephyr_basics)
 
 <!--
 The [practical-zephyr-manifest-repository](https://github.com/lmapii/practical-zephyr-manifest-repository) is a separate repository that is used for demonstrating _West workspaces_.